GCF and Prime Factorization Review

Is 15 a prime or composite number or neither?

• prime

• composite

• neither

Is 1 a prime or composite number or neither?

• prime

• composite

• neither

What is a factor?

• A number that you subtract from another number.

• A number with more than 2 multiples

• A number that divides evenly into another number.

• A number that you add to another number.

Tags

CCSS.4.OA.B.4

What is a composite number?

• A whole number greater than 1 that has more than 2 factors.

• A whole number greater than 1 that has exactly 2 factors, 1 and itself.

• A number that divides evenly into another number.

• A number that you multiply by another number.

What is a prime number?

• A whole number greater than 1 that has more than 2 factors.

• A whole number greater than 1 that has exactly 2 factors, 1 and itself.

• A number that divides evenly into another number.

• A number that you multiply by another number.

What is the prime factorization of 48? - make a factor tree.

• 2 x 3 x 8

• 2 x 2 x 3 x 4

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2 x 3

Tags

CCSS.4.OA.B.4

What is the prime factorization of 100? - make a factor tree.

• 2 x 5 x 10

• 2 x 5 x 5

• 4 x 25

• 2 x 2 x 5 x 5

Which set lists all the factors of 24?

• 1, 2, 3, 6, 7, 12, 24
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 3, 4, 5, 6, 8, 12, 24
• 1, 3, 4, 6, 8, 24

Tags

CCSS.4.OA.B.4

Which is not a factor of 18?

• 7
• 2
• 3
• 9

Tags

CCSS.4.OA.B.4

GCF of 8 and 20

• 8
• 2
• 4
• 10

Tags

CCSS.4.OA.B.4